1/*
2 * Handles the Mitac mioa701 SoC system
3 *
4 * Copyright (C) 2008 Robert Jarzmik
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation in version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18 *
19 * This is a little schema of the sound interconnections :
20 *
21 *    Sagem X200                 Wolfson WM9713
22 *    +--------+             +-------------------+      Rear Speaker
23 *    |        |             |                   |           /-+
24 *    |        +--->----->---+MONOIN         SPKL+--->----+-+  |
25 *    |  GSM   |             |                   |        | |  |
26 *    |        +--->----->---+PCBEEP         SPKR+--->----+-+  |
27 *    |  CHIP  |             |                   |           \-+
28 *    |        +---<-----<---+MONO               |
29 *    |        |             |                   |      Front Speaker
30 *    +--------+             |                   |           /-+
31 *                           |                HPL+--->----+-+  |
32 *                           |                   |        | |  |
33 *                           |               OUT3+--->----+-+  |
34 *                           |                   |           \-+
35 *                           |                   |
36 *                           |                   |     Front Micro
37 *                           |                   |         +
38 *                           |               MIC1+-----<--+o+
39 *                           |                   |         +
40 *                           +-------------------+        ---
41 */
42
43#include <linux/module.h>
44#include <linux/moduleparam.h>
45#include <linux/platform_device.h>
46
47#include <asm/mach-types.h>
48#include <mach/audio.h>
49
50#include <sound/core.h>
51#include <sound/pcm.h>
52#include <sound/soc.h>
53#include <sound/initval.h>
54#include <sound/ac97_codec.h>
55
56#include "pxa2xx-ac97.h"
57#include "../codecs/wm9713.h"
58
59#define AC97_GPIO_PULL		0x58
60
61/* Use GPIO8 for rear speaker amplifier */
62static int rear_amp_power(struct snd_soc_codec *codec, int power)
63{
64	unsigned short reg;
65
66	if (power) {
67		reg = snd_soc_read(codec, AC97_GPIO_CFG);
68		snd_soc_write(codec, AC97_GPIO_CFG, reg | 0x0100);
69		reg = snd_soc_read(codec, AC97_GPIO_PULL);
70		snd_soc_write(codec, AC97_GPIO_PULL, reg | (1<<15));
71	} else {
72		reg = snd_soc_read(codec, AC97_GPIO_CFG);
73		snd_soc_write(codec, AC97_GPIO_CFG, reg & ~0x0100);
74		reg = snd_soc_read(codec, AC97_GPIO_PULL);
75		snd_soc_write(codec, AC97_GPIO_PULL, reg & ~(1<<15));
76	}
77
78	return 0;
79}
80
81static int rear_amp_event(struct snd_soc_dapm_widget *widget,
82			  struct snd_kcontrol *kctl, int event)
83{
84	struct snd_soc_codec *codec = widget->dapm->card->rtd[0].codec;
85
86	return rear_amp_power(codec, SND_SOC_DAPM_EVENT_ON(event));
87}
88
89/* mioa701 machine dapm widgets */
90static const struct snd_soc_dapm_widget mioa701_dapm_widgets[] = {
91	SND_SOC_DAPM_SPK("Front Speaker", NULL),
92	SND_SOC_DAPM_SPK("Rear Speaker", rear_amp_event),
93	SND_SOC_DAPM_MIC("Headset", NULL),
94	SND_SOC_DAPM_LINE("GSM Line Out", NULL),
95	SND_SOC_DAPM_LINE("GSM Line In", NULL),
96	SND_SOC_DAPM_MIC("Headset Mic", NULL),
97	SND_SOC_DAPM_MIC("Front Mic", NULL),
98};
99
100static const struct snd_soc_dapm_route audio_map[] = {
101	/* Call Mic */
102	{"Mic Bias", NULL, "Front Mic"},
103	{"MIC1", NULL, "Mic Bias"},
104
105	/* Headset Mic */
106	{"LINEL", NULL, "Headset Mic"},
107	{"LINER", NULL, "Headset Mic"},
108
109	/* GSM Module */
110	{"MONOIN", NULL, "GSM Line Out"},
111	{"PCBEEP", NULL, "GSM Line Out"},
112	{"GSM Line In", NULL, "MONO"},
113
114	/* headphone connected to HPL, HPR */
115	{"Headset", NULL, "HPL"},
116	{"Headset", NULL, "HPR"},
117
118	/* front speaker connected to HPL, OUT3 */
119	{"Front Speaker", NULL, "HPL"},
120	{"Front Speaker", NULL, "OUT3"},
121
122	/* rear speaker connected to SPKL, SPKR */
123	{"Rear Speaker", NULL, "SPKL"},
124	{"Rear Speaker", NULL, "SPKR"},
125};
126
127static int mioa701_wm9713_init(struct snd_soc_pcm_runtime *rtd)
128{
129	struct snd_soc_codec *codec = rtd->codec;
130
131	/* Prepare GPIO8 for rear speaker amplifier */
132	snd_soc_update_bits(codec, AC97_GPIO_CFG, 0x100, 0x100);
133
134	/* Prepare MIC input */
135	snd_soc_update_bits(codec, AC97_3D_CONTROL, 0xc000, 0xc000);
136
137	return 0;
138}
139
140static struct snd_soc_ops mioa701_ops;
141
142static struct snd_soc_dai_link mioa701_dai[] = {
143	{
144		.name = "AC97",
145		.stream_name = "AC97 HiFi",
146		.cpu_dai_name = "pxa2xx-ac97",
147		.codec_dai_name = "wm9713-hifi",
148		.codec_name = "wm9713-codec",
149		.init = mioa701_wm9713_init,
150		.platform_name = "pxa-pcm-audio",
151		.ops = &mioa701_ops,
152	},
153	{
154		.name = "AC97 Aux",
155		.stream_name = "AC97 Aux",
156		.cpu_dai_name = "pxa2xx-ac97-aux",
157		.codec_dai_name ="wm9713-aux",
158		.codec_name = "wm9713-codec",
159		.platform_name = "pxa-pcm-audio",
160		.ops = &mioa701_ops,
161	},
162};
163
164static struct snd_soc_card mioa701 = {
165	.name = "MioA701",
166	.owner = THIS_MODULE,
167	.dai_link = mioa701_dai,
168	.num_links = ARRAY_SIZE(mioa701_dai),
169
170	.dapm_widgets = mioa701_dapm_widgets,
171	.num_dapm_widgets = ARRAY_SIZE(mioa701_dapm_widgets),
172	.dapm_routes = audio_map,
173	.num_dapm_routes = ARRAY_SIZE(audio_map),
174};
175
176static int mioa701_wm9713_probe(struct platform_device *pdev)
177{
178	int rc;
179
180	if (!machine_is_mioa701())
181		return -ENODEV;
182
183	mioa701.dev = &pdev->dev;
184	rc =  snd_soc_register_card(&mioa701);
185	if (!rc)
186		dev_warn(&pdev->dev, "Be warned that incorrect mixers/muxes setup will"
187			 "lead to overheating and possible destruction of your device."
188			 " Do not use without a good knowledge of mio's board design!\n");
189	return rc;
190}
191
192static int mioa701_wm9713_remove(struct platform_device *pdev)
193{
194	struct snd_soc_card *card = platform_get_drvdata(pdev);
195
196	snd_soc_unregister_card(card);
197	return 0;
198}
199
200static struct platform_driver mioa701_wm9713_driver = {
201	.probe		= mioa701_wm9713_probe,
202	.remove		= mioa701_wm9713_remove,
203	.driver		= {
204		.name		= "mioa701-wm9713",
205		.pm     = &snd_soc_pm_ops,
206	},
207};
208
209module_platform_driver(mioa701_wm9713_driver);
210
211/* Module information */
212MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
213MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
214MODULE_LICENSE("GPL");
215